How Do You Know the Insulation Is Even? Loose-fill insulation can create a smooth-looking surface. But one area might be: 14 inches deep while another is only: 8 inches. That is where depth markers help. DOE attic-insulation guidance recommends checking blown-insulation depth during installation to verify even coverage and the intended installed thickness. What Are
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Both Can Be Blown Into an Attic ENERGY STAR lists both: Cellulose Fibreglass as common loose-fill materials for unfinished attic floors and difficult-to-reach areas. But they are not the same material. What Is Cellulose? Cellulose insulation is primarily fibre-based material made largely from recycled paper products and treated for appropriate building use. What Is Fibreglass
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Underlayment Lives in a Tough Environment Under metal roofing, the hidden underlayment can experience substantial heat. That is why products specifically rated for high-temperature roofing applications exist. Polyglass, for example, markets high-temperature self-adhered underlayment specifically for steel, aluminum, copper, and other high-temperature roof coverings. Why Not Use Any Underlayment? Products have different: Temperature ratings Adhesives
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Not Every Metal Should Touch Every Other Metal When certain different metals contact each other in the presence of moisture, an electrochemical reaction can accelerate corrosion. This is known as: Galvanic corrosion. The Metal Construction Association specifically warns that incompatible dissimilar metals and certain fasteners can create corrosion problems in roofing systems. Where Can This
WHAT IS GALVANIC CORROSION ON A METAL ROOF? Read More »
Standing-Seam Panels Need to Move Long metal panels change length as temperatures change. The roof attachment system has to account for that movement. What Is a Fixed Clip? A fixed clip secures the panel without built-in sliding movement. It may be appropriate for certain: Panel lengths Roof systems Designs What Is a Floating Clip? A
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What’s Under Your Shingles? Usually a structural panel deck. Two common materials are: Plywood OSB What Is Plywood? Plywood uses thin wood veneers glued together in alternating directions. What Is OSB? Oriented strand board uses layers of engineered wood strands positioned in different directions and bonded together. The American Wood Council notes that both are
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What Is That Box at the Top of the Downspout? On some buildings, water does not enter a vertical downspout directly. Instead, it first enters a: Conductor head also called a: Leader head Collector head What Does It Do? The component receives water from: Scuppers Gutters Roof outlets then directs it into the downspout below.
WHAT IS A CONDUCTOR HEAD ON A DOWNSPOUT? Read More »
Aluminum Moves With Temperature A seamless gutter may look rigid. But aluminum changes dimension as it heats and cools. On a short run, that movement may be small. On a very long run, it becomes more important. What Can Happen if Movement Is Restricted? Potential symptoms include: Buckling Joint stress Loose fasteners Distortion Sealant failure
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What Are Box Gutters? Most modern homeowners recognize an eavestrough as a metal channel hanging along the fascia. A box gutter is different. It may be: Built into the roof edge Hidden behind a parapet Integrated into the building structure That makes it less visible. Why Can Hidden Gutters Be Risky? A conventional gutter leak
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Rain Chain vs. Downspout Both begin at the same place: the eavestrough outlet. But they manage water very differently. What Is a Downspout? A downspout carries roof runoff through an enclosed pipe toward: Ground discharge Drainage extension Another approved drainage route It controls water through a defined pathway. What Is a Rain Chain? A rain
RAIN CHAIN VS. DOWNSPOUT: WHICH WORKS BETTER? Read More »